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Hello and welcome to just answer my name is ***** ***** I will be the one to assist you. So the first thing you will need to check is that the two fans are running as well as the compressor. We also are going to need to remove the back freezer panel by going through the inside of the freezer to see if the condenser coils are possibly frozen and if they are you will need to use a blow dryer to defrost it.
That certainly sounds like a main control board problem to me. Nothing else would cause all of those things to fail at once so the problem is with the PCB board and will need to be replaced.
I was trying to find your part online but I am coming up empty so you may have to contact Samsung to have them send you a new board in the event you intend on fixing it. You can also check ebay as well sometimes brand new boards for older units are posted on there.
I noticed that your question was still open so I wanted to follow up with you to see if you were still needing assistance?